package CloudStorageServlets;

import CloudStorage.*;
import java.io.IOException;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class BuySpaceServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException, ClassNotFoundException, InstantiationException, IllegalAccessException, SQLException
    {
        HttpSession session = request.getSession();
        session.removeAttribute("success");
        
        if (  Integer.parseInt( request.getParameter("action")) == 1 )
        {
            float space = Float.parseFloat(request.getParameter("space"));
            session.setAttribute("space", space);
            session.setAttribute("final step", "");
            session.setAttribute("card", request.getParameter("card"));
            session.setAttribute("number", request.getParameter("number"));

            float charge = Utility.computeCharge(space);

            session.setAttribute("charge", charge);
            response.sendRedirect("buy.jsp");
        }
        else if (  Integer.parseInt( request.getParameter("action")) == 2 )
        {
            float space = ((Float) session.getAttribute("space")).floatValue();
            float charge = ((Float) session.getAttribute("charge")).floatValue();
            Database database = new Database();
            User user = (User) session.getAttribute("user");
                                                    /* Gb --> bytes */
            database.giveSpace(user.getId(), (int) space * 1024 * 1024 * 1024);
            user = database.getUser(user.getUsername());
            session.setAttribute("user", user);

            session.removeAttribute("final step");
            session.removeAttribute("space");
            session.removeAttribute("card");
            session.removeAttribute("number");
            session.removeAttribute("charge");
            session.removeAttribute("space");
            session.setAttribute("success", "");
            response.sendRedirect("buy.jsp");
        }
        else if (  Integer.parseInt( request.getParameter("action")) == 0 )
        {
            session.removeAttribute("final step");
            session.removeAttribute("card");
            session.removeAttribute("number");
            session.removeAttribute("charge");
            session.removeAttribute("space");
            response.sendRedirect("buy.jsp");
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(BuySpaceServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
